Borane (bh3) adds to alkenes to form an alkylborane. in the first box draw the mechanism arrows, and in the second box draw the correct product. be sure to add lone pairs of electrons and nonzero formal charges to all species.

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

How many grams of aluminum will there be in 98g of al2o3?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?